<template>
    <div class="dialog" v-if="visible">
        <div class="modal" @click="modalClose"></div>
        <div class="registerForm">
            <div class="hideModal iconfont icon-guanbi" @click="modalClose"></div>
            <h2>注册</h2>
            <input type="text" placeholder="用户名" v-model="userName">
            <input type="password" placeholder="密码" v-model="userPwd">
            <input type="password" placeholder="确认密码" v-model="userPwds">
            <button @click="submitRegister">submit</button>
        </div>
    </div>
    <section>
        <!-- 背景颜色 -->
        <div class="color"></div>
        <div class="color"></div>
        <div class="color"></div>
        <div class="box">
            <!-- 背景圆 -->
            <div class="circle" style="--x:0"></div>
            <div class="circle" style="--x:1"></div>
            <div class="circle" style="--x:2"></div>
            <div class="circle" style="--x:3"></div>
            <div class="circle" style="--x:4"></div>
            <!-- 登录框 -->
            <div class="container">
                <div class="form">
                    <h2>登录</h2>
                    <form>
                        <div class="inputBox">
                            <input type="text" placeholder="用户名" v-model="userName">

                        </div>
                        <div class="inputBox">
                            <input type="password" placeholder="密码" v-model="userPwd">

                        </div>
                        <div class="login" @click="submitLogin">
                            登录
                        </div>
                        <p class="forget">忘记密码?<span @click="Reset">
                                点击这里
                            </span></p>
                        <p class="forget">没有账户?<span @click="showRegisterModal">
                                注册
                            </span></p>
                    </form>
                </div>
            </div>
        </div>
    </section>
</template>

<script>
    import {
        reactive,
        toRefs
    } from 'vue'
    import {
        login,
        register
    } from '../plugins/request'
    import {
        useRouter
    } from 'vue-router'
    import { ElMessage } from 'element-plus'
    export default {
        setup() {
            const router = useRouter()
            const state = reactive({
                userName: '',
                userPwd: '',
                userPwds: '',
                visible: false,
            })
            const submitLogin = async () => {
                if (!state.userName) {
                    return ElMessage.error('用户名不能为空')
                }
                if (!state.userPwd) {
                    return ElMessage.error('密码不能为空')
                }
                let params = {
                    userName: state.userName,
                    userPwd: state.userPwd
                }
                let {
                    data
                } = await login(params)
                if (data.status != 1) {
                    return ElMessage.error(data.message)
                }
                localStorage.setItem('token', data.token)
                router.push({
                    path: '/'
                })
                ElMessage.success('登陆成功')
            }
            const showRegisterModal = () => {
                init()
                state.visible = true;
            }
            const modalClose = () => {
                state.visible = false
            }
            const submitRegister = async () => {
                if (!state.userName || !state.userPwd || !state.userPwds) return ElMessage.error('信息请填写完整')
                if (state.userPwd != state.userPwds) return ElMessage.error('两次密码输入不一致')
                let params = {
                    userName: state.userName,
                    userPwd: state.userPwd,
                    userPwds: state.userPwds
                }
                let {
                    data
                } = await register(params)
                if (data.status == 1) {
                    init()
                    ElMessage.success(data.message)
                    state.visible = false
                } else {
                    ElMessage.error(data.message)
                }
            }
            const Reset = () => {
                ElMessage.success('新密码已发送到你的邮箱')
            }
            const init = () => {
                state.userName = ''
                state.userPwd = ''
                state.userPwds = ''
            }
            return {
                ...toRefs(state),
                submitLogin,
                showRegisterModal,
                modalClose,
                submitRegister,
                Reset
            }
        }
    }
</script>

<style lang="scss" scoped>
    section {
        /* 相对定位 */
        position: relative;
        overflow: hidden;
        display: flex;
        justify-content: center;
        align-items: center;
        min-height: 100vh;
        /* linear-gradient() 函数用于创建一个表示两种或多种颜色线性渐变的图片 */
        background: linear-gradient(to bottom, #f1f4f9, #dff1ff);

        .color {
            /* 绝对定位 */
            position: absolute;
            /* 使用filter(滤镜) 属性，给图像设置高斯模糊*/
            filter: blur(200px);

            &:nth-child(1) {
                top: -350px;
                width: 600px;
                height: 600px;
                background: #ff359b;
            }

            &:nth-child(2) {
                bottom: -150px;
                left: 100px;
                width: 500px;
                height: 500px;
                background: #fffd87;
            }

            &:nth-child(3) {
                bottom: 50px;
                right: 100px;
                width: 500px;
                height: 500px;
                background: #00d2ff;
            }

        }
    }


    .box {
        position: relative;

        .circle {
            position: absolute;
            background: rgba(255, 255, 255, 0.1);
            /* backdrop-filter属性为一个元素后面区域添加模糊效果 */
            backdrop-filter: blur(5px);
            box-shadow: 0 25px 45px rgba(0, 0, 0, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.5);
            border-right: 1px solid rgba(255, 255, 255, 0.2);
            border-bottom: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 50%;
            /* 使用filter(滤镜) 属性，改变颜色。
        hue-rotate(deg)  给图像应用色相旋转 
        calc() 函数用于动态计算长度值 
        var() 函数调用自定义的CSS属性值x*/
            filter: hue-rotate(calc(var(--x) * 70deg));
            /* 调用动画animate，需要10s完成动画，
        linear表示动画从头到尾的速度是相同的，
        infinite指定动画应该循环播放无限次*/
            animation: animate 10s linear infinite;
            /* 动态计算动画延迟几秒播放 */
            animation-delay: calc(var(--x) * -1s);

            &:nth-child(1) {
                top: -50px;
                right: -60px;
                width: 100px;
                height: 100px;
            }

            &:nth-child(2) {
                top: 150px;
                left: -100px;
                width: 120px;
                height: 120px;
                z-index: 2;
            }

            &:nth-child(3) {
                bottom: 50px;
                right: -60px;
                width: 80px;
                height: 80px;
                z-index: 2;
            }

            &:nth-child(4) {
                bottom: -80px;
                left: 100px;
                width: 60px;
                height: 60px;
            }

            &:nth-child(5) {
                top: -80px;
                left: 140px;
                width: 60px;
                height: 60px;
            }
        }
    }

    /* 背景圆动画 */

    @keyframes animate {

        0%,
        100% {
            transform: translateY(-50px);
        }

        50% {
            transform: translateY(50px);
        }
    }

    /* 登录框样式 */

    .container {
        position: relative;
        width: 400px;
        min-height: 400px;
        background: rgba(255, 255, 255, 0.1);
        display: flex;
        justify-content: center;
        align-items: center;
        backdrop-filter: blur(5px);
        box-shadow: 0 25px 45px rgba(0, 0, 0, 0.1);
        border: 1px solid rgba(255, 255, 255, 0.5);
        border-right: 1px solid rgba(255, 255, 255, 0.2);
        border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    }

    .form {
        position: relative;
        width: 100%;
        height: 100%;
        padding: 50px;

        h2 {
            position: relative;
            color: #fff;
            font-size: 24px;
            font-weight: 600;
            letter-spacing: 5px;
            margin-bottom: 30px;
            cursor: pointer;

            &::before {
                content: "";
                position: absolute;
                left: 0;
                bottom: -10px;
                width: 0px;
                height: 3px;
                background: #fff;
                transition: 0.5s;
            }

            &:hover:before {
                width: 53px;
            }
        }

        .inputBox {
            width: 100%;
            margin-top: 20px;

            input {
                width: 100%;
                padding: 10px 20px;
                background: rgba(255, 255, 255, 0.2);
                outline: none;
                border: none;
                border-radius: 30px;
                border: 1px solid rgba(255, 255, 255, 0.5);
                border-right: 1px solid rgba(255, 255, 255, 0.2);
                border-bottom: 1px solid rgba(255, 255, 255, 0.2);
                font-size: 16px;
                letter-spacing: 1px;
                color: #fff;
                box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);

                &::placeholder {
                    color: #fff;
                }
            }
        }

        .login {
            background: #fff;
            color: #666;
            max-width: 100px;
            font-weight: 600;
            cursor: pointer;
            margin: 20px 0;
            line-height: 40px;
            text-align: center;
            border-radius: 50px;
        }
    }

    .forget {
        margin-top: 6px;
        color: #fff;
        letter-spacing: 1px;

        span {
            color: #fff;
            font-weight: 600;
            text-decoration: none;
            cursor: pointer;
        }
    }

    .dialog {
        .modal {
            position: fixed;
            top: 0;
            right: 0;
            bottom: 0;
            left: 0;
            z-index: 999;
            background-color: rgba(0, 0, 0, .65);
        }

        .registerForm {
            animation: showDia 0.5s linear forwards;
            // &::after{
            //     font-family: iconfont;
            //     position: absolute;
            //     content: '\e667';
            //     font-size: 24px;
            //     right: 5px;
            //     top: 5px;
            //     border-radius: 50%;
            //     z-index: 1001;
            //     cursor: pointer;
            // }
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            padding: 50px;
            position: fixed;
            width: 520px;
            background-color: #fff;
            z-index: 1000;
            border-radius: 5px;

            .hideModal {
                position: absolute;
                font-size: 24px;
                right: 0px;
                top: 0px;
                border-radius: 50%;
                z-index: 1001;
                cursor: pointer;
                width: 30px;
                height: 30px;

                &:hover {
                    color: #0b9aff;
                    transform: scale(1.1);
                }
            }

            h2 {
                font-weight: 600;
                font-size: 24px;
                text-align: center;
                color: #0b9aff;
            }

            input {
                width: 100%;
                outline: none;
                border: 1px solid #eeeeee;
                height: 49px;
                padding: 0 15px;
                margin-bottom: 20px;

                &:focus {
                    border: 1px solid #0b9aff;
                }
            }

            button {
                width: 100%;
                height: 49px;
                outline: none;
                border: none;
                color: #0b9aff;
                font-size: 24px;
                border-radius: 5px;
                cursor: pointer;
            }
        }
    }
</style>